O'Brien P Q, Brown S R, Davis P L. "Method for the Synthesis of 2-{4-[(tert-butoxy)carbonyl]-2-oxopiperazin-1-yl}propanoic acid" [P]. US Patent, US 11841681 B2, 2020-05-21.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of 2-{4-[(tert-butoxy)carbonyl]-2-oxopiperazin-1-yl}propanoic acid in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2010, 1785, 7231-7236.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 2-{4-[(tert-butoxy)carbonyl]-2-oxopiperazin-1-yl}propanoic acid as an Impurity". J. Agric. Food Chem., 2021, 909, 2967-2988.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 2-{4-[(tert-butoxy)carbonyl]-2-oxopiperazin-1-yl}propanoic acid Using HRMS and NMR". Talanta, 2014, 736, (10), 2267-2289.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate 2-{4-[(tert-butoxy)carbonyl]-2-oxopiperazin-1-yl}propanoic acid Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2016, 1583, (11), 674-693.